Air-brake.



PATENTED MAY"5 1903.

J. L IPKOWSKI.

AIR BRAKE.

APPLICATION IILE'D JAN. 31, 1903.

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No. 727,394. PATENTED MAY5 1903. J. LIPKOWSKI.

AIR BRAKE.

APPLIOATION FILED JAN. 31, 1903.

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No. 727,394. Patented May 5, 1903.

UNTTnn STATES PATENT OFFIC JOSEPH LIPKOVVSKI, OF PARIS, FRANCE, ASSIGNOR TO SOCIETE GENERALE DES FREINS LIPKOVVSKI, OF PARIS, FRANCE.

AIR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 727,394, dated May 5, 1903. Application filed January 31. 1903. Serial No. 141,316. (No model.)

To all whom it may concern: bearing-piece 19 is clamped between the Be it known that I, JOSEPH LIPKOWSKI, a brake-cylinder 1 and the reservoir 3 to serve subject of the Emperor of Russia, and a resias a rest for the spring 20, which bears at its dentofParis,France,haveinventedlmproveother end against the cross-head 21 on the 55 ments in Air-Brakes, of which the following end of the piston-rod. A barrel-guide 22 may is a specification. be inserted between the bearing-piece to pre- This invention relates to air brake eylvent any undue sag of the spring 20, this barinders operating on the general principle rel-guide being secured on the piston-rod bedescribed in my United States Patent No. tween the nuts 18 and the spring 17. Open- 60 1o 549,800that is, a brake-cylinder in which ing 23 in the trunk 13 and opening 24 in the two distinct movements of the brake-rod and tube open communication between the res piston are produced forone power application ervoir 1 and such trunk, and thus the trunk of the brakes. r and tube serve to augment the capacity of The main object of this'invention is to imthe reservoir by using part of the area of the 6 15 prove the construction of such a brake-cylbrake-cy1inderas an auXiliarystorage-cell for inder and toincrease the capacity of the aux: the auxiliary reservoir. iliaryreservoirwithout unduly increasing its An air-distributer X, corresponding to a bulk. triple valve, is controlled by varying pres- In the accompanying drawings, Figure 1 is sure in the train-pipe and is so operated upon 70 a side elevation of myimproved brake-cylina slight reduction therein as to automaticder. Fig. 2 is a sectional view on the line ally open the reducer-cylinder 2 to the at- 2 2, Fig. 5. Fig. 3 is a cross-sectional View inosphere, which causes the brake-shoes to on the line 3 3, Fig. 1. Fig. 4 is aplan view, be moved into light contact with the wheels partly broken away. Fig. 5 is an end view, with aforce equal to the area of the small pis- 75 and Fig. 6 is a detail of a port. ton times thepressure in the auxiliary was The brake-cylinder 1 and red ucer-cylinder ervoir 3. On the forward movement of the 2 are preferablyformed in one casting, while piston 12 the air in front of it passes out the auxiliary cylinder 3 is bolted to the open through port 7, up through the check-valve 4, end of the brake-cylinder. A check-valve and through port 6 to occupya position at 80 3o chamber and various ports are cast in the the right of the piston 12. When in this pometal of the brake and reducer cylinders, sition, it will be seen that no expansion of while a plate 5 near the end of the reducer the reservoir-air has taken place, as there has three openings 6, 7, and 8. Opening 6 has been free intercommunication between passes to above the check-valve 4 and from the reservoir 3 and cylinder 1. Upon a fur- 8 there to the rear end of the brake-cylinder, ther reduction of train-pipe pressure the disand opening 8 leads direct to the reducertributer X so acts as to more or less reduce cylinder, while opening 7 leads to below the the pressure in the brake-cylinder 2, whereeheck-valve 4 and from there to the forward upon the brakes will be applied with a force end of the brake-cylinder. A piston-rod 9 equal to the entire area of the large piston go passes through a suitable stuffing-box 10 in times the difference in pressure between the the end of the reducer-cylinder and carries auxiliary-reservoir pressure and the cylindera small piston 11 within the reducer-cylinder pressure. and a large piston 12 within the brake cylin- I claim as my invention der. The piston 12 has an extending tubul. A piston-rod for an air-brake cylinder 5 lar trunk 13, fitting against a piston-packing carrying a large and a small piston, a tubu- 14 against the piston 11, while a conical tube lar trunk between them and an opening from 15 bears against the packing-ring 16 of the said trunk through the larger piston, substanlarge piston 12. The smaller end of this contially as described. ical tube fits over the piston-rod 9 and is held 2. An air-brake auxiliary reservoir,abrake- [00 0 in position against the piston-face bya spring cylinder and a reducer, in combination with 17 and nuts 18 18 on the rod. An annular a piston-rod, a small and a large piston thereon, and a tubular trunk in the brake-cylinder opening into the auxiliary reservoir, substantially as described.

3. An air-brake, comprising a reducer, a brake-cylinder and an auxiliary reservoir, a brake-rod therein, two pistons therein, one of larger diameter than the other, the smaller piston in the reducer-cylinder and the larger in the brake-cylinder, a tubular trunk between the two pistons and an opening from said trunk to the auxiliary reservoir, substantially as described.

4. An air-brake auxiliary reservoir and brake-cylinder in combination with a piston in the cylinder, said piston carrying a tubular trunk communicating with the reservoir, and means for preventing the expansion of pressure on thereservoir side of the piston during part of its travel, substantially as described.

5. An air-brake auxiliary reservoir and brake-cylinder, in combination with a piston in the cylinder, the reservoir being secured to but open to the cylinder at one end, a tubular trunk extending into the cylinder and connecting with the reservoir, substantially as described.

6. A piston-rod for an air-brake cylinder having a small piston, a large piston, a tubular trunk between them, packing-rings for each piston, a conical tube fitting against the packing-ring of thelarge piston and a spring between said sleeve and piston-rod, substantially as described.

7. A piston-rod for an air-brake cylinder having a small piston and a large piston, the large piston having a tubular trunk, a conical tube adapted to fit against the large-piston face, the smaller end of the tube fitting over the piston-rod, and a spring means for holding said conical tube against the pistonface, substantially as described.

8. In combination with a brake-cylinder and an auxiliary reservoir, a fixed annular bearing piece, a piston and rod, a crosshead at the end of the rod in the main chamher, a spring between the bearing-piece and rod, and a guide-barrel between the crosshead and bearing-piece carried by the rod, substantially as described.

9. An air-brake cylinder and an auxiliary reservoir secured thereto, in combination With a piston-rod, a piston in the brake-cylinder and a tubular trunk carried on the piston-rod within the brake-cylinder, and an opening from the trunk to the auxiliary reservoir, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

JOSEPH LIPKOW'SKI.

Witnesses:

PRINCE ALEXIS ENGALETSOHEFF, MURIJAN POREBSKI. 

